The triangle angle sum theorem states that the 3 angles in the triangle must equal 180 degrees.
Step-by-step explanation:

In this problem WP means what percent
20 = WP X 160
solve for WP, by dividing both sides by 160
and you get:
0.125 = WP
Change your decimal into a percent by multiplying by 100%
12.5% is your result.
<span>The underlined place in 83.5851 which is then rounded to the nearest thousandth is </span>A. tenth; 83.585 .